Documentation: Fix dead URLs to ftp.kernel.org

As ftp.kernel.org is closed [0], this commit fixes dead URLs in
documents to use www.kernel.org instead.

[0] https://www.kernel.org/shutting-down-ftp-services.html

Signed-off-by: SeongJae Park <sj38.park@gmail.com>
Acked-by: Theodore Ts'o <tytso@mit.edu>
Acked-by: David S. Miller <davem@davemloft.net>
Reviewed-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Documentation/process/applying-patches.rst

@@ -250,17 +250,11 @@ specific homes.
 
 The 4.x.y (-stable) and 4.x patches live at
 
-	ftp://ftp.kernel.org/pub/linux/kernel/v4.x/
+	https://www.kernel.org/pub/linux/kernel/v4.x/
 
 The -rc patches live at
 
-	ftp://ftp.kernel.org/pub/linux/kernel/v4.x/testing/
-
-In place of ``ftp.kernel.org`` you can use ``ftp.cc.kernel.org``, where cc is a
-country code. This way you'll be downloading from a mirror site that's most
-likely geographically closer to you, resulting in faster downloads for you,
-less bandwidth used globally and less load on the main kernel.org servers --
-these are good things, so do use mirrors when possible.
+	https://www.kernel.org/pub/linux/kernel/v4.x/testing/
 
 
 The 4.x kernels
@@ -317,7 +311,7 @@ the current stable kernel.
  The -stable team usually do make incremental patches available as well
  as patches against the latest mainline release, but I only cover the
  non-incremental ones below. The incremental ones can be found at
- ftp://ftp.kernel.org/pub/linux/kernel/v4.x/incr/
+ https://www.kernel.org/pub/linux/kernel/v4.x/incr/
 
 These patches are not incremental, meaning that for example the 4.7.3
 patch does not apply on top of the 4.7.2 kernel source, but rather on top

Documentation/process/changes.rst

@@ -349,7 +349,7 @@ Make
 Binutils
 --------
 
-- <ftp://ftp.kernel.org/pub/linux/devel/binutils/>
+- <https://www.kernel.org/pub/linux/devel/binutils/>
 
 OpenSSL
 -------
@@ -362,17 +362,17 @@ System utilities
 Util-linux
 ----------
 
-- <ftp://ftp.kernel.org/pub/linux/utils/util-linux/>
+- <https://www.kernel.org/pub/linux/utils/util-linux/>
 
 Ksymoops
 --------
 
-- <ftp://ftp.kernel.org/pub/linux/utils/kernel/ksymoops/v2.4/>
+- <https://www.kernel.org/pub/linux/utils/kernel/ksymoops/v2.4/>
 
 Module-Init-Tools
 -----------------
 
-- <ftp://ftp.kernel.org/pub/linux/kernel/people/rusty/modules/>
+- <https://www.kernel.org/pub/linux/utils/kernel/module-init-tools/>
 
 Mkinitrd
 --------
@@ -402,7 +402,7 @@ Xfsprogs
 Pcmciautils
 -----------
 
-- <ftp://ftp.kernel.org/pub/linux/utils/kernel/pcmcia/>
+- <https://www.kernel.org/pub/linux/utils/kernel/pcmcia/>
 
 Quota-tools
 -----------